Overview

The Marsyangdi Hydropower Plant (MHPP) is a run-of-the-river (RoR) hydroelectric facility located on the Marsyangdi River in the Lamjung District of central Nepal. Commissioned in 1989, it marked a significant milestone as Nepal’s first major hydropower project constructed with foreign aid and modern engineering practices. Operated by the Nepal Electricity Authority (NEA), it remains a reliable source of clean energy for the nation.

• Installed Capacity: 69 MW

• Commissioned: 1989

• Project Type: Run-of-the-river

• Owner/Operator: Nepal Electricity Authority (NEA)

• River: Marsyangdi River

Key Features

• Location: Anbukhaireni Municipality, Lamjung District

• Turbines: 3 x 23 MW Francis-type turbines

• Transmission: 132 kV line to Bharatpur Substation

• Annual Generation: Approx. 462 GWh

• Design Head: 185 meters

• Headrace Tunnel Length: ~7.8 km

Historical Significance

1. First Major Hydropower Project in Central Nepal

Marsyangdi HPP was a breakthrough in Nepal’s hydropower sector, being the first to use underground tunneling and a surface powerhouse for efficient power generation.

2. International Cooperation

• Funded primarily by the Federal Republic of Germany (through KfW) and Nepalese government.

• German engineering and project management significantly contributed to its success and capacity-building for NEA.

3. Foundation for Future Projects

Its success laid the groundwork for later Marsyangdi basin projects like:

• Middle Marsyangdi (70 MW)

• Upper Marsyangdi A (50 MW)

Technical Specifications

Socio-Economic Impact

• Employment: Created job opportunities for hundreds of skilled and unskilled workers during construction and operation.

• Rural Electrification: Helped extend electricity access to surrounding districts like Gorkha, Tanahun, and Chitwan.

• Local Infrastructure: Roads and bridges built for the project improved connectivity in Lamjung and nearby regions.

Operational Challenges

• Sedimentation: High sediment load during monsoon affects turbine life and efficiency.

• Maintenance: Aging infrastructure requires regular repairs and potential retrofitting.

• Climate Dependency: Like all RoR projects, dry season flow reductions lead to lower electricity output.

Interesting Facts

• MHPP operates in cascade with Middle Marsyangdi (downstream) and Upper Marsyangdi A (upstream), optimizing energy use along the river.

• It has served as a training site for NEA engineers and technicians for over 30 years.

• The plant celebrated its 30th anniversary in 2019 with discussions around digital upgrades and automation.

Future Outlook

As part of modernization efforts, NEA is exploring:

• Automation and SCADA systems to improve control

• Turbine refurbishment to extend life and efficiency

• Sediment management upgrades for better performance during monsoon

Conclusion

The Marsyangdi Hydropower Plant is a landmark project in Nepal’s energy history. As the first large-scale hydropower development on the Marsyangdi River, it laid the foundation for the country’s modern power system and remains a vital contributor to Nepal’s electricity supply. Even decades after its commissioning, its efficient operation continues to support the national grid and inspire future hydropower development.